TM-9-2350-311-34-2
CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM
TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 1994
TM-9-2350-311-34-2 - Page 324 of 552
TM 9-2350-311-34-2
6-11 EQUILIBRATED ELEVATION MECHANISM ASSEMBLY - CONTINUED
d. Assembly - Continued
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Install new preformed packing (38) in fluid restrictor (36).
Apply sealing compound to two cap screws (35). Install fluid restrictor (36) to cannon equilibrator (37) with
two cap screws. Torque cap screws to 20 Ib-ft (27 N·m).
Install new preformed packing (34) and new packing retainer (33) in bracket assembly (32).
Install tube coupling (28) to bracket assembly (32).
Install two new preformed packings (29 and 31) and new packing retainer (30) in manifold (27).
Connect manifold (27) to tube coupling (28).
Apply sealing compound to threads of two cap screws (26). Install manifold (27) to cannon equilibrator (37)
with two cap screws. Torque cap screws to 20 Ib-ft (27 N·m).
Lubricate two new seals (71 ) with hydraulic fluid. Install on elevating piston rod (8).
NOTE
Perform step 32 for unmodified equilibrated elevation mechanism assembly or step 33 for
modified equilibrated elevation mechanism assembly.
Be careful not to scratch smooth, finished, inner bore of cannon equilibrator or to damage new
seals.
Restrain cannon equilibrator (37) and install elevating piston rod (8) into cannon equilibrator through front
end.
Restrain cannon equilibrator (37). Insert rod guide tool (not shown) into equilibration end of elevating piston
rod (8). Install elevating piston rod in cannon equilibrator (37) through front end. Remove rod guide tool.
Lubricate new seal ring (70) with hydraulic fluid and install on piston adapter (54).
NOTE
Perform step 35 for unmodified equilibrated elevation mechanism assembly or step 36 for modified
equilibrated elevation mechanism assembly.
Install piston adapter (54) by screwing it into rear of elevating piston rod (8) by hand.
Apply sealing compound to piston adapter (54) and screw it into rear of elevating piston rod (8) using span-
ner attachment (not shown).
Lubricate new preformed packing (68), new split ring (69), new seal ring (67), and new ring scraper (66) with
hydraulic fluid. Install on cap (65).
6-62
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